This page explains how Gautam Anand (USATT# 84319)'s rating went from 1253 to 1237 at the ICC - Advanced League event from 14 Dec 2013. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.